Precise forming production line and forming process of aluminum alloy section

Abstract

The invention relates to the technical field of extrusion forming, and particularly discloses a precision forming production line and a forming process of aluminum alloy profiles, the precision forming production line of the aluminum alloy profiles comprises a base table and an extrusion forming unit arranged at one end of the base table, the extrusion forming unit comprises an outer barrel, and an extrusion cavity is formed in the outer barrel; a transition barrel is arranged at one end of the extrusion cavity, an expansion ring is connected between the transition barrel and the extrusion cavity, a pressurization bin is formed in the periphery of the transition barrel, a pressurization piece is arranged on the outer side of the outer barrel, and a pressurization opening matched with the pressurization piece is formed in the side wall of the pressurization bin. After the aluminum bar is pushed into the extrusion cavity, the pressurization bin is inflated and pressurized through the pressurization piece, so that the expansion ring shrinks in the radial direction and wraps the aluminum bar tightly, the aluminum bar on the inlet side of the extrusion cavity is pressurized and sealed all the time through the expansion ring, and the situation that extrusion forming fails due to the fact that an aluminum material which is extruded and deformed in the extrusion cavity overflows is avoided.

Description

Technical Field

[0001] The invention relates to the field of extrusion technology, and more specifically, to a precision forming production line and forming process for aluminum alloy profiles. Background Art

[0002] Aluminum alloy extrusion molding is to apply pressure to the aluminum alloy billet in the mold cavity to make it produce directional plastic deformation, and extrude it from the mold hole to form a part or semi-finished product with the required cross-sectional shape and size and certain mechanical properties; under the action of pressure, the aluminum ingot enters the welding chamber through the diversion hole, is re-welded under high temperature, high pressure and high vacuum environment, and finally flows out through the gap between the mold core and the mold hole to form a pipe or hollow profile that meets the size and performance requirements; In the existing aluminum alloy extrusion forming process, if the aluminum rod is not filled evenly or the exhaust is insufficient in the extrusion cavity, and the fit between the extrusion cylinder and the extrusion pad is inappropriate, the aluminum rod may be subjected to additional lateral force during the extrusion process, causing uneven deformation of the aluminum rod during the extrusion process, and then overflowing from the extrusion cavity, causing extrusion forming failure and waste of aluminum material. Summary of the invention

[0003] In order to overcome the above technical problems, the present invention proposes a precision forming production line and forming process for aluminum alloy profiles.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A precision forming production line for aluminum alloy profiles, comprising: A base, on which a slide rail is horizontally arranged; An extrusion molding unit is arranged at one end of a base, and comprises an outer cylinder fixed on the base, an extrusion head is detachably mounted at one end of the outer cylinder, an extrusion cavity is arranged in the outer cylinder, an extrusion die is arranged between the extrusion cavity and the extrusion head, a transition cylinder is arranged at one end of the extrusion cavity away from the extrusion head, an expansion ring is connected between the transition cylinder and the extrusion cavity, a pressurizing chamber is arranged at the periphery of the transition cylinder, a pressurizing member is arranged at the outer side of the outer cylinder, and a pressurizing port adapted to the pressurizing member is arranged on the side wall of the pressurizing chamber; The driving unit is movably arranged on the slide rail and is used for driving the aluminum rod to enter the extrusion molding unit.

[0005] As a further solution of the present invention: the pressurizing member comprises a casing fixed to the outer cylinder, a fixed cylinder is arranged in the casing, a telescopic rod is movably arranged in the fixed cylinder, a sealing disk is arranged at one end of the telescopic rod extending into the pressurizing port, and a pressurized airway connected to the pressurizing port is opened in the telescopic rod; A cylinder is installed on the top of the housing, and a top plate abutting against the telescopic rod is connected to the output end of the cylinder. A clamping sleeve is fixed on the telescopic rod, and a spring abutting against the clamping sleeve is arranged in the fixed cylinder.

[0006] As a further solution of the present invention: an air cavity is provided in the casing, a plurality of air holes connecting the air cavity and the pressurized airway are provided circumferentially on the telescopic rod, and a pressurizing pump connected to the air cavity is also installed on the casing.

[0007] As a further solution of the present invention: the extrusion molding unit also includes an inner cylinder slidably embedded in the outer cylinder, a push rod is slidably embedded in the inner cylinder, and a jacket for clamping the aluminum rod is connected to one end of the push rod facing the extrusion head.

[0008] As a further solution of the present invention: it also includes a heating unit connected to the outer cylinder, the heating unit includes a heating seat, one end of the heating seat is provided with a ring adapted to the inner cylinder, the end of the heating seat away from the ring is provided with a heating cylinder, a heating rod is embedded in the heating cylinder, the end of the heating rod facing the outer cylinder is connected to a heat-conducting rod, and the end of the heat-conducting rod away from the heating rod is connected to a push rod.

[0009] As a further solution of the present invention: the driving unit includes a slide table slidably arranged on a slide rail, a heat-conducting sleeve is arranged inside the slide table, and a heating cavity adapted to the heating tube is opened inside the heat-conducting sleeve; a plurality of heating wires are connected to the inner wall of the slide table through a card, and the heating wires are in contact with the outer wall of the heat-conducting sleeve.

[0010] As a further solution of the present invention: an annular filling cavity is arranged between the heating tube and the heating rod, a liquid inlet channel connected to the annular filling cavity is opened in the heating tube, a first channel connected to the liquid inlet channel is opened in the heating seat, and a valve is installed at the inlet end of the first channel.

[0011] As a further solution of the present invention: the heating seat is further provided with a plurality of second flow channels connected with the sleeve ring and the inner cylinder, and a valve is installed at the inlet end of each second flow channel.

[0012] As a further solution of the present invention: it also includes a lifting unit, which is located on a side close to the extrusion head, and includes a support seat and a sliding frame movably arranged on the support seat, a roller is installed at the bottom of the sliding frame, a guide strip adapted to the roller is arranged on the support seat, a driving motor for driving the sliding frame is installed on one side of the support seat, and a support sleeve adapted to the aluminum alloy profile is arranged on the upper end of the sliding frame.

[0013] The present invention also discloses a forming process of a precision forming production line for aluminum alloy profiles, comprising the following steps: S1. Insert the aluminum rod into the jacket; S2, driving the inner tube into the outer tube through the driving unit, so that the front end of the aluminum rod enters the extrusion cavity; S3, pressurizing the pressurizing chamber through the pressurizing member, so that the expansion ring radially shrinks and wraps the aluminum rod; S4. The driving unit drives the push rod into the inner tube, so that the front end of the aluminum rod enters the extrusion die, and the extruded aluminum alloy profile is output from the extrusion head.

[0014] Beneficial effects of the present invention: After the driving unit pushes the aluminum rod into the extrusion cavity, the pressure chamber is inflated and pressurized through the pressure piece, so that the expansion ring contracts radially and wraps the aluminum rod tightly. At the same time, the driving unit feeds at a uniform speed along the slide rail, so that the aluminum rod is pushed into the extrusion cavity at a uniform speed. Subsequently, the aluminum material is extruded through the extrusion die into the extrusion head under the action of extrusion to form an aluminum alloy profile. During the extrusion molding process, the aluminum rod on the inlet side of the extrusion cavity is always pressurized and sealed by the expansion ring, so as to prevent the extrusion molding failure caused by the overflow of the extruded and deformed aluminum material in the extrusion cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of a precision forming production line for aluminum alloy profiles of the present invention; Figure 2 It is a three-dimensional schematic diagram of another perspective of a precision forming production line for aluminum alloy profiles of the present invention; Figure 3 It is a cross-sectional view of a precision forming production line for aluminum alloy profiles of the present invention; Figure 4 It is a three-dimensional schematic diagram of an extrusion molding unit in a precision molding production line for aluminum alloy profiles of the present invention; Figure 5 It is a cross-sectional view of an extrusion molding unit in a precision molding production line for aluminum alloy profiles of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 It is a cross-sectional view from another perspective of an extrusion molding unit in a precision molding production line for aluminum alloy profiles of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle; Fig. 9 It is a cross-sectional view of a pressurized part in a precision forming production line for aluminum alloy profiles of the present invention; Fig.10 for Fig. 9 Enlarged view of point C in the middle; Fig.11It is a structural schematic diagram of a heating unit in a precision forming production line for aluminum alloy profiles of the present invention; Fig.12 It is a structural schematic diagram of a driving unit in a precision forming production line for aluminum alloy profiles of the present invention; Fig.13 It is a structural schematic diagram of a slide in a precision forming production line for aluminum alloy profiles of the present invention; Fig.14 It is a structural schematic diagram of a lifting unit in a precision forming production line for aluminum alloy profiles of the present invention.

[0017] In the figure: 100, base; 110, slide rail; 200, lifting unit; 210, support seat; 220, guide bar; 230, sliding frame; 240, roller; 250, drive motor; 260, support sleeve; 300, driving unit; 310, slide; 320, heat-conducting sleeve; 330, heating chamber; 340, card; 350, heating wire; 400, heating unit; 410, heating seat; 411, first flow channel; 412, second flow channel; 413, valve; 420, heating cylinder; 421, liquid inlet flow channel; 430, heating rod; 440, heat conducting rod; 450, sleeve ring; 500, extrusion molding unit; 510, outer cylinder; 511, extrusion cavity; 512, extrusion die; 513, transition cylinder; 514, expansion ring; 515, pressurization chamber; 516, pressurization port; 520, extrusion head; 530, inner cylinder; 540, push rod; 550, jacket; 560, pressurization member; 561, sleeve; 5611, air cavity; 562, fixed cylinder; 563, telescopic rod; 5631, pressurized airway; 5632, air hole; 564, ferrule; 565, spring; 566, cylinder; 567, top plate; 568, sealing disk; 569, pressurization pump; 600, Aluminum alloy profile. DETAILED DESCRIPTION

[0018] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0019] See also Figure 1 , Figure 2 and Figure 3The first aspect of the present invention discloses a precision forming production line for aluminum alloy profiles, comprising a base 100, a driving unit 300 and an extrusion forming unit 500; a slide rail 110 is horizontally arranged on the base 100; the driving unit 300 is movably arranged on the slide rail 110, and is used to drive the aluminum rod into the extrusion forming unit 500; See also Figure 4 , Figure 5 and Figure 6 The extrusion molding unit 500 is arranged at one end of the base 100, and includes an outer cylinder 510 fixed on the base 100, an extrusion head 520 is detachably installed at one end of the outer cylinder 510, an extrusion chamber 511 is provided in the outer cylinder 510, an extrusion die 512 is provided between the extrusion chamber 511 and the extrusion head 520, a transition cylinder 513 is provided at one end of the extrusion chamber 511 away from the extrusion head 520, an expansion ring 514 is connected between the transition cylinder 513 and the extrusion chamber 511, a pressurizing chamber 515 is provided on the periphery of the transition cylinder 513, a pressurizing member 560 is provided on the outer side of the outer cylinder 510, and a pressurizing port 516 adapted to the pressurizing member 560 is provided on the side wall of the pressurizing chamber 515; Specifically, the aluminum rod is pushed into the extrusion molding unit 500 through the driving unit 300, and the aluminum rod enters the extrusion cavity 511 through the transition tube 513, and the pressurizing chamber 515 is inflated and pressurized by the pressure-applying member 560, so that the expansion ring 514 radially contracts and wraps the aluminum rod tightly, and at the same time, the driving unit 300 feeds at a uniform speed along the slide rail 110, so as to push the aluminum rod into the extrusion cavity 511 at a uniform speed, and then the aluminum material is extruded through the extrusion die 512 into the extrusion head 520 under the action of extrusion to form an aluminum alloy profile 600; during the extrusion molding process, the aluminum rod at the inlet side of the extrusion cavity 511 is always pressurized and sealed by the expansion ring 514, so as to avoid the overflow of the extruded and deformed aluminum material in the extrusion cavity 511, which leads to failure of the extrusion molding.

[0020] For further information, see Figure 7 , Figure 8 and Fig. 9 The pressurizing member 560 includes a casing 561 fixed to the outer cylinder 510, a fixed cylinder 562 is arranged in the casing 561, a telescopic rod 563 is movably arranged in the fixed cylinder 562, a sealing disk 568 is arranged at one end of the telescopic rod 563 extending into the pressurizing port 516, and a pressurized airway 5631 connected to the pressurizing port 516 is opened in the telescopic rod 563; a cylinder 566 is installed at the top of the casing 561, and a top plate 567 abutting against the telescopic rod 563 is connected to the output end of the cylinder 566, a clamping sleeve 564 is fixedly sleeved on the telescopic rod 563, and a spring 565 abutting against the clamping sleeve 564 is arranged in the fixed cylinder 562; Specifically, when the pressurizing chamber 515 needs to be pressurized, the cylinder 566 drives the top plate 567 to retract, and under the elastic force of the spring 565, the sleeve 564 is pushed upward, so that the telescopic rod 563 moves upward, driving the sealing disk 568 to seal the pressurizing port 516, and then the pressurizing chamber 515 is inflated and pressurized through the pressurizing airway 5631; When replacing the aluminum rods, it is necessary to release the sealing effect of the expansion ring 514 on the remaining aluminum rods of the previous group, and push the top plate 567 out through the cylinder 566, so that the telescopic rod 563 extends into the pressurizing port 516, so that a gap is generated between the sealing disk 568 and the pressurizing port 516, so that the high-pressure gas in the pressurizing chamber 515 can be leaked, thereby reducing the air pressure in the pressurizing chamber 515, and then the expansion ring 514 can be radially expanded to release the wrapping effect on the remaining aluminum rods.

[0021] It is worth noting that after the sealing disk 568 seals the pressurization port 516, as the pressurization airway 5631 continuously inflates and pressurizes the pressurization chamber 515, the sealing disk 568 will be subjected to the outward pressure of the internal air pressure of the pressurization chamber 515, so that the sealing disk 568 can fit more closely with the pressurization port 516, effectively improving the sealing performance of the sealing disk 568.

[0022] Also, see Fig. 9 and Fig.10 The casing 561 has an air cavity 5611 formed therein, the telescopic rod 563 has a plurality of air holes 5632 formed circumferentially thereon for connecting the air cavity 5611 and the pressurized air passage 5631, and the casing 561 is also provided with a pressurizing pump 569 connected to the air cavity 5611; When the pressurized chamber 515 needs to be pressurized, the sealing disk 568 seals the pressurization port 516. At this time, the air hole 5632 on the telescopic rod 563 is just located in the air cavity 5611. The air cavity 5611 is inflated by the pressure pump 569, and the gas enters the pressurized chamber 515 through the air hole 5632 and the pressurized airway 5631 to pressurize the pressurized chamber 515; when the pressurized chamber 515 needs to be depressurized, the telescopic rod 563 is extended into the pressurization port 516 to stagger the air hole 5632 and the air cavity 5611, thereby blocking the air cavity 5611.

[0023] For further information, see Figure 7 The extrusion molding unit 500 further includes an inner cylinder 530 slidably embedded in the outer cylinder 510, a push rod 540 is slidably embedded in the inner cylinder 530, and a jacket 550 for clamping the aluminum rod is connected to one end of the push rod 540 facing the extrusion head 520; Specifically, insert one end of the aluminum rod into the jacket 550, first push the inner tube 530 into the outer tube 510, and then push the push rod 540 relative to the inner tube 530, so that the aluminum rod in the jacket 550 can be gradually pushed into the extrusion cavity 511; It is worth noting that in this embodiment, the overall size of the extrusion molding unit 500 can be effectively reduced through the two-stage feeding stroke of the inner cylinder 530 and the push rod 540.

[0024] In one embodiment, considering that during the extrusion molding process, the aluminum rod temperature is too low, which will reduce the fluidity of the aluminum alloy, thereby reducing the extrusion speed. The low temperature will cause the aluminum alloy profile to fail to reach the required quenching temperature, thereby affecting its mechanical properties and easily causing scratches, burrs and other defects on the profile surface; in addition, due to the increase in friction, the friction between the extrusion die 512 and the aluminum rod will also cause surface scratches; To do this, see Figure 3 and Fig.11 , further comprising a heating unit 400 connected to the outer cylinder 510, the heating unit 400 comprising a heating seat 410, one end of the heating seat 410 being provided with a sleeve 450 adapted to the inner cylinder 530, the end of the heating seat 410 away from the sleeve 450 being provided with a heating cylinder 420, the heating cylinder 420 being embedded with a heating rod 430, the end of the heating rod 430 facing the outer cylinder 510 being connected with a heat conducting rod 440, the end of the heat conducting rod 440 away from the heating rod 430 being connected with a push rod 540; Specifically, after the aluminum rod is inserted into the jacket 550, the heating rod 430 is heated by the heating tube 420, and the heat is transferred to the jacket 550 through the heat conductive rod 440 and the push rod 540, so that the aluminum rod in the jacket 550 can be heated, and the temperature of the aluminum rod is maintained between 400-540°C to ensure the quality and performance of the profile, avoid defects such as scratches and burrs caused by the decrease in the temperature of the aluminum rod during the molding process, and improve the extrusion molding quality.

[0025] For further information, see Fig.11 , Fig.12 and Fig.13 The driving unit 300 includes a slide table 310 slidably disposed on the slide rail 110, a heat-conducting sleeve 320 is disposed in the slide table 310, and a heating chamber 330 adapted to the heating cylinder 420 is provided in the heat-conducting sleeve 320; a plurality of heating wires 350 are connected to the inner wall of the slide table 310 through a card 340, and the heating wires 350 are in contact with the outer wall of the heat-conducting sleeve 320; Specifically, the heating tube 420 is embedded in the heating cavity 330 of the thermal sleeve 320, and the thermal sleeve 320 is heated by the heating wire 350. The heat is then transferred to the heating tube 420 through the thermal sleeve 320, and then conducted to the push rod 540 through the heating rod 430 and the thermal rod 440, so as to heat the aluminum rod in the jacket 550.

[0026] For further information, see Fig.11An annular filling cavity is provided between the heating tube 420 and the heating rod 430, a liquid inlet channel 421 communicating with the annular filling cavity is provided in the heating tube 420, a first flow channel 411 communicating with the liquid inlet channel 421 is provided in the heating seat 410, and a valve 413 is installed at the inlet end of the first flow channel 411; Heat transfer oil is injected into the first flow channel 411 through the valve 413, and enters the annular filling cavity through the liquid inlet channel 421, so that the heat transfer oil fills the internal space of the annular filling cavity. The heat transfer oil can fill the gap between the heating tube 420 and the heating rod 430, thereby increasing the heat transfer area and effectively improving the heat transfer efficiency.

[0027] For further information, see Fig.11 The heating seat 410 is also provided with a plurality of second flow channels 412 communicating with the sleeve ring 450 and the inner cylinder 530, and a valve 413 is installed at the inlet end of each second flow channel 412; Specifically, by injecting heat preservation agent into the sleeve 450 and the inner cylinder 530 through each second flow channel 412, the heat preservation performance of the sleeve 450 and the inner cylinder 530 can be improved, and the internal heat loss can be effectively reduced, which is beneficial to maintain the optimal temperature of the aluminum rod and further improve the extrusion molding quality.

[0028] It should be noted that the specific type of the above-mentioned heat transfer oil is not limited, and it can be mineral heat transfer oil, synthetic heat transfer oil or polymer oil; the type of the above-mentioned thermal insulation agent is also not limited, and it can be an organic thermal insulation agent, such as polyurethane foam, polystyrene foam, etc.

[0029] Also, see Figure 2 and Fig.14 In order to prevent the extruded aluminum alloy profile from bending and deforming due to its excessive length, the lifting unit 200 is further included. The lifting unit 200 is located on a side close to the extrusion head 520, and includes a support seat 210 and a sliding frame 230 movably arranged on the support seat 210. A roller 240 is installed at the bottom of the sliding frame 230. A guide bar 220 adapted to the roller 240 is arranged on the support seat 210. A driving motor 250 for driving the sliding frame 230 is installed on one side of the support seat 210. A supporting sleeve 260 adapted to the aluminum alloy profile 600 is arranged on the upper end of the sliding frame 230; Specifically, the aluminum alloy profile 600 output from the extrusion head passes into the support sleeve 260. As the aluminum alloy profile 600 is continuously output, the support sleeve 260 is synchronously driven by the driving motor 250 to move forward along the guide bar 220, so that the support sleeve 260 is used to support and guide the aluminum alloy profile 600, thereby preventing the aluminum alloy profile 600 from bending and deforming downward and affecting the quality of the aluminum alloy profile 600.

[0030] In another embodiment, the second aspect of the present invention provides a forming process of a precision forming production line for aluminum alloy profiles, comprising the following steps: S1, inserting the aluminum rod into the jacket 550; S2, driving the inner cylinder 530 into the outer cylinder 510 through the driving unit 300, so that the front end of the aluminum rod enters the extrusion cavity 511; S3, pressurizing the pressurizing chamber 515 through the pressurizing member 560, so that the expansion ring 514 radially shrinks and wraps the aluminum rod; S4. The driving unit 300 drives the push rod 540 to enter the inner cylinder 530 , so that the front end of the aluminum rod enters the extrusion die 512 , and the extruded aluminum alloy profile 600 is output from the extrusion head 520 .

[0031] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A precision forming production line for aluminum alloy profiles, characterized in that: include: A base (100) on which a slide rail (110) is horizontally arranged; An extrusion molding unit (500) is arranged at one end of a base (100), comprising an outer cylinder (510) fixed on the base (100), an extrusion head (520) being detachably mounted on one end of the outer cylinder (510), an extrusion chamber (511) being provided in the outer cylinder (510), an extrusion die (512) being provided between the extrusion chamber (511) and the extrusion head (520), a transition cylinder (513) being provided at one end of the extrusion chamber (511) away from the extrusion head (520), an expansion ring (514) being connected between the transition cylinder (513) and the extrusion chamber (511), a pressurizing chamber (515) being provided on the periphery of the transition cylinder (513), a pressurizing member (560) being provided on the outer side of the outer cylinder (510), and a pressurizing port (516) being provided on the side wall of the pressurizing chamber (515) and being compatible with the pressurizing member (560); The driving unit (300) is movably disposed on the slide rail (110) and is used to drive the aluminum rod to enter the extrusion molding unit (500).

2. The precision forming production line of aluminum alloy profiles according to claim 1, characterized in that: The pressurizing member (560) comprises a casing (561) fixed to the outer cylinder (510), a fixed cylinder (562) being arranged in the casing (561), a telescopic rod (563) being movably arranged in the fixed cylinder (562), a sealing disk (568) being arranged at one end of the telescopic rod (563) extending into the pressurizing port (516), and a pressurizing air passage (5631) communicating with the pressurizing port (516) being provided in the telescopic rod (563); A cylinder (566) is installed at the top of the sleeve (561); an output end of the cylinder (566) is connected to a top plate (567) that abuts against the telescopic rod (563); a clamping sleeve (564) is fixed on the telescopic rod (563); and a spring (565) that abuts against the clamping sleeve (564) is arranged in the fixed cylinder (562).

3. The precision forming production line of aluminum alloy profiles according to claim 2, characterized in that: An air cavity (5611) is provided in the casing (561), and a plurality of air holes (5632) are circumferentially provided on the telescopic rod (563) for connecting the air cavity (5611) and the pressurized air passage (5631). A pressurizing pump (569) connected to the air cavity (5611) is also mounted on the casing (561).

4. The precision forming production line of aluminum alloy profiles according to claim 1, characterized in that: The extrusion molding unit (500) further comprises an inner cylinder (530) slidably embedded in the outer cylinder (510), a push rod (540) being slidably embedded in the inner cylinder (530), and a clamping sleeve (550) for clamping an aluminum rod is connected to one end of the push rod (540) facing the extrusion head (520).

5. The precision forming production line of aluminum alloy profiles according to claim 4, characterized in that: It also comprises a heating unit (400) connected to the outer cylinder (510), the heating unit (400) comprising a heating seat (410), one end of the heating seat (410) being provided with a sleeve (450) adapted to the inner cylinder (530), the end of the heating seat (410) away from the sleeve (450) being provided with a heating cylinder (420), a heating rod (430) being embedded in the heating cylinder (420), the end of the heating rod (430) facing the outer cylinder (510) being connected to a heat conducting rod (440), and the end of the heat conducting rod (440) away from the heating rod (430) being connected to a push rod (540).

6. The precision forming production line for aluminum alloy profiles according to claim 5, characterized in that: The driving unit (300) comprises a slide table (310) slidably arranged on a slide rail (110), a heat-conducting sleeve (320) being arranged inside the slide table (310), and a heating chamber (330) adapted to the heating cylinder (420) being provided inside the heat-conducting sleeve (320); a plurality of heating wires (350) are connected to the inner wall of the slide table (310) via a card (340), and the heating wires (350) are in contact with the outer wall of the heat-conducting sleeve (320).

7. The precision forming production line for aluminum alloy profiles according to claim 5, characterized in that: An annular filling cavity is provided between the heating tube (420) and the heating rod (430); a liquid inlet channel (421) communicating with the annular filling cavity is provided in the heating tube (420); a first channel (411) communicating with the liquid inlet channel (421) is provided in the heating seat (410); a valve (413) is installed at the inlet end of the first channel (411).

8. The precision forming production line for aluminum alloy profiles according to claim 7, characterized in that: The heating seat (410) is also provided with a plurality of second flow channels (412) in communication with the sleeve ring (450) and the inner cylinder (530), and a valve (413) is installed at the inlet end of each second flow channel (412).

9. The precision forming production line of aluminum alloy profiles according to claim 1, characterized in that: The invention also comprises a lifting unit (200), the lifting unit (200) being located on a side close to the extrusion head (520), comprising a support seat (210) and a sliding frame (230) movably arranged on the support seat (210), a roller (240) being installed at the bottom of the sliding frame (230), a guide bar (220) being arranged on the support seat (210) and being compatible with the roller (240), a driving motor (250) for driving the sliding frame (230) being installed on one side of the support seat (210), and a supporting sleeve (260) being arranged at the upper end of the sliding frame (230) and being compatible with the aluminum alloy profile (600).

10. A forming process of a precision forming production line for aluminum alloy profiles as claimed in any one of claims 4 to 8, characterized in that: The following steps are involved: S1. Insert the aluminum rod into the jacket (550); S2, driving the inner cylinder (530) into the outer cylinder (510) through the driving unit (300), so that the front end of the aluminum rod enters the extrusion cavity (511); S3, pressurizing the inside of the pressurizing chamber (515) through the pressurizing member (560) so that the expansion ring (514) radially shrinks and wraps around the aluminum rod; S4. The driving unit (300) drives the push rod (540) to enter the inner cylinder (530), so that the front end of the aluminum rod enters the extrusion die (512), and the extruded aluminum alloy profile (600) is output from the extrusion head (520).

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